Update bamboo CI service UI text

What does this MR do?

Updates the UI text for the Atlassian Bamboo service integration:

• Update name to just Atlassian Bamboo (no CI, as that's not the product name as per their docs).
• Bring help text out of the text boxes and puts them below.
• Light copy edits.
• Adds a "Learn More" link to the docs for this integration.

Resolves #300585 (closed)

Screenshots (strongly suggested)

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Does this MR meet the acceptance criteria?

Conformity

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• Documentation (if required)
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Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

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